Add remote server cross compilation (#19136)

This will allow us to compile debug builds of the remote-server for a
different architecture than the one we are developing on.

This also adds a CI step for building our remote server with minimal
dependencies.

Release Notes:

- N/A

crates/gpui/src/platform/blade/blade_renderer.rs

@@ -455,7 +455,7 @@ impl BladeRenderer {
         }
     }
 
-    #[cfg_attr(target_os = "macos", allow(dead_code))]
+    #[cfg_attr(any(target_os = "macos", feature = "wayland"), allow(dead_code))]
     pub fn viewport_size(&self) -> gpu::Extent {
         self.surface_config.size
     }